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Stylisma pickeringii (Torrey ex M.A. Curtis) A. Gray var. pickeringii . Pickering's Dawnflower. Phen: (May-) Jun-Aug (-Sep); Jul-Sep. Hab: Longleaf pine sandhills, usually in the driest, most barren, deep-sand areas, occasionally colonizing dry, disturbed areas in sandhills, such as sandy roadbanks, known from the Fall-line Sandhills, aeolian rims of Carolina bays, and sandhills on relict riverine dunes along Coastal Plain rivers. Dist: Var. pickeringii ranges from s. NC south through SC, GA, AL, and e. MS, with a disjunct area in the Pine Barrens of s. NJ, sometimes treated as a separate variety "caesariensis" (see synonymy).

ID notes: Stylisma pickeringii is easily recognizable by its growth form, with numerous stems arching from a central point, then trailing radially away, forming a mound 1-2 meters in diameter. The narrowly linear leaves are borne vertically.

Origin/Endemic status: Endemic

Taxonomy Comments: Fernald and Schubert (1949) named four varieties in this widely but disjunctly distributed species; Myint (1966) reduced this to two varieties, one eastern and one western.

Synonymy: = C, FNA14, K1, K3, K4, Myint (1966); < Bonamia pickeringii (Torr. ex M.A.Curtis) A.Gray – RAB, Shinners (1962d), Wilson (1960b); < Breweria pickeringii (Torr. ex M.A.Curtis) A.Gray – G; > Breweria pickeringii (Torr. ex M.A.Curtis) A.Gray var. angustifolia (Choisy) Fernald & Schub. – Fernald & Schubert (1949); > Breweria pickeringii (Torr. ex M.A.Curtis) A.Gray var. caesariensis Fernald & Schub. – F, Fernald & Schubert (1949); > Breweria pickeringii (Torr. ex M.A.Curtis) A.Gray var. cuthbertii Fernald & Schub. – Fernald & Schubert (1949); > Breweria pickeringii (Torr. ex M.A.Curtis) A.Gray var. pickeringii – F, Fernald & Schubert (1949); < Stylisma pickeringii (Torr. ex M.A.Curtis) A.Gray – S

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC (taxonomic split from wetland indicator species)
  • Great Plains: FAC (taxonomic split from wetland indicator species)
  • Midwest: UPL (taxonomic split from wetland indicator species)

Heliophily ?: 9

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Alan Cressler: Stylisma pickeringii var. pickeringii, Sandhill Community, Fall Line Sandhills Region, Taylor County, Georgia 1 by Alan Cressler source | Original Image ⭷

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